SQLDict, we can select messages with any date if there
  are already validated
- delete duplicate messages into sqldict even if the tag
  are different betweend them, like it was working previously


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@17792 20353a03-c40f-0410-a6d1-a30d3c3de9de